noun
phlegmatic temperament
A classical temperament type (along with 多血質, 胆汁質, 憂鬱質) describing a calm, unemotional, and somewhat sluggish disposition. Used in psychology and personality descriptions.
彼は粘液質で、めったに怒らない。
He has a phlegmatic temperament and rarely gets angry.
Sanguine temperament: cheerful, active, and optimistic, contrasting with the calm and slow phlegmatic type.
Choleric temperament: irritable and quick to anger, opposite of the easygoing phlegmatic.
Melancholic temperament: thoughtful and often sad, whereas phlegmatic is more unemotional and steady.
Compound of 粘液 (mucus, phlegm) + 質 (quality, nature), reflecting the ancient humoral theory linking phlegm to a calm, sluggish temperament.